DSPIC33FJ32GP302-I/MM 查看數據表（PDF） - Microchip Technology

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DSPIC33FJ32GP302-I/MM

High-Performance, 16-bit Digital Signal Controllers

Microchip Technology 

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04

TABLE 30-40: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V

(unless otherwise stated)

Operating temperature -40°C  TA  +85°C for Industrial

-40°C  TA  +125°C for Extended

Param

No.

Symbol

Characteristic

Min. Typ(2) Max. Units

Conditions

AD50 TAD

AD51 tRC

AD55

AD56

AD57

tCONV

FCNV

TSAMP

AD60 tPCS

Clock Parameters(1)

ADC Clock Period

117.6 —

ADC Internal RC Oscillator

Period

—

250

Conversion Rate

Conversion Time

— 14 TAD

Throughput Rate

—

—

Sample Time

3 TAD

—

Timing Parameters

Conversion Start from Sample

2 TAD

—

Trigger(2)

—

—

500

—

3 TAD

ns

—

ns

—

ns

—

ksps

—

—

—

— Auto convert trigger not

selected

AD61 tPSS

Sample Start from Setting

2 TAD

— 3 TAD

—

—

Sample (SAMP) bit(2)

AD62 tCSS

Conversion Completion to

— 0.5 TAD —

—

—

Sample Start (ASAM = 1)(2)

AD63 tDPU

Time to Stabilize Analog Stage

—

—

20

s

—

from ADC Off to ADC On(2,3)

Note 1: Because the sample caps eventually loses charge, clock rates below 10 kHz may affect linearity

performance, especially at elevated temperatures.

2: These parameters are characterized but not tested in manufacturing.

3: The tDPU is the time required for the ADC module to stabilize at the appropriate level when the module is

turned on (AD1CON1<ADON>=’1’). During this time, the ADC result is indeterminate.

DS70292D-page 358

Preliminary

 2009 Microchip Technology Inc.

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